Fix model builder for gpt-oss#2228
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Pull request overview
This PR fixes the GPT-OSS Python model builder’s rotary embedding cache computation by correcting the inverse-frequency (inv_freq) formula used to generate RoPE cos/sin caches, aligning it with the standard 1 / (theta ** (i / dim)) definition.
Changes:
- Correct
inv_freqcomputation inGPTOSSModel.make_rotary_embedding_caches_from_scratch()by applying the missing reciprocal (1.0 / (...)). - Preserve existing cache-generation flow while producing corrected RoPE frequency values.
kunal-vaishnavi
approved these changes
Jun 15, 2026
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The inv_freq is not correct